a(n) = round(Sum_{k=0..n} tan(k)).

Terms

a(0) =0a(1) =2a(2) =-1a(3) =-1a(4) =0a(5) =-3a(6) =-3a(7) =-2a(8) =-9a(9) =-10a(10) =-9a(11) =-235a(12) =-236a(13) =-235a(14) =-228a(15) =-229a(16) =-228a(17) =-225a(18) =-226a(19) =-226a(20) =-224a(21) =-225a(22) =-225a(23) =-224a(24) =-226a(25) =-226a(26) =-225a(27) =-228a(28) =-228a(29) =-227